Cersei Lannister (Lena Headey)

Hmmm... Did Cersei actually DO anything this past season? She's still the Queen Regent and she had a bunch of great scenes, particularly in "Blackwater." But basically, Cersei's still in King's Landing lamenting the role of powerful women in a patriarchal society. And she freed Joffrey from his engagement to Sansa. But mostly? Business as usual.